Hey just a heads up IF you are running into this issue like I was.
I had to create a new profile today to change my profile name.
(RCT Sharkey was not the default profile, so no idea why I can't change the name, but that's another issue)
Anyhow, after creating my new profile PV1 Sharkey, of course I had to redo any settings or keybindings. Did that. Jumped in game to test it out. Everything works EXCEPT, my stance adjustment keys (CTRL+W/S) do nothing. It acts as though I'm just pressing W or S and character moves forward or backward. Only the base stances work. Stand, Crouch, and prone. (Toggle Z and X).
Switched back to previous profile and yeah, stance adjustment works fine.
So after lots a searching, I found the fix... for this particular issue.
In the following file, make the following adjustment:
"C:\Users\UserName\Documents\Arma 3 - Other Profiles\YourArmaProfileName\YourArmaProfileName.Arma3Profile"
Open that file in your preferred text editor (Notepad or other)
Find the line that says: keyAdjust[]={};
That should say: keyAdjust[]={29};
If that line already has a 29 in the curly brackets, then you've got a different issue.
PV1 Sharkey